1109513 has 2 divisors, whose sum is σ = 1109514. Its totient is φ = 1109512.

The previous prime is 1109509. The next prime is 1109531. The reversal of 1109513 is 3159011.

Together with next prime (1109531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1106704 + 2809 = 1052^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109513 - 2² = 1109509 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554756 + 554757.

It is an arithmetic number, because the mean of its divisors is an integer number (554757).

2^1109513 is an apocalyptic number.

It is an amenable number.

1109513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109513 is an equidigital number, since it uses as much as digits as its factorization.

1109513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 1109513 is about 1053.3342299574. The cubic root of 1109513 is about 103.5247360109.

The spelling of 1109513 in words is "one million, one hundred nine thousand, five hundred thirteen".